document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183151>Question 183151</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,\r<BR>\n" );
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document.write( "Can you please help me solve for this, Doane&#8722;Seward: Applied Statistics in Business and Economics, ch. 15:\r<BR>\n" );
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document.write( "Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At &#945; = .01, is the degree of certainty independent of credits earned?\r<BR>\n" );
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document.write( "Credits Earned 	Very Uncertain 	Somewhat Certain 		Very Certain 	Row Total<BR>\n" );
document.write( "0–9 		12 			8		 3 		23<BR>\n" );
document.write( "10–59 		8 			4 		10 		22<BR>\n" );
document.write( "60 or more 	1			 7 		11 		19<BR>\n" );
document.write( "Col Total 		21 			19 		24 		64\r<BR>\n" );
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document.write( "(This format is cramming the numbers together to make it easier Credits erned: 0-9, Very uncertain: 12, Somewhat certain: 8, Very certain: 3,  Row Total: 23.)\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #137653 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=137653\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At &#945; = .01, is the degree of certainty independent of credits earned? <BR>\n" );
document.write( "Credits Earned Very Uncertain Somewhat Certain Very Certain Row Total<BR>\n" );
document.write( "0–9 12 8 3 23<BR>\n" );
document.write( "10–59 8 4 10 22<BR>\n" );
document.write( "60 or more 1 7 11 19<BR>\n" );
document.write( "Col Total 21 19 24 64 <BR>\n" );
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document.write( "Ho: row and column factors are independent<BR>\n" );
document.write( "Ha: they are dependent<BR>\n" );
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document.write( "I ran a Chi-Sq Test on the 3 by 3 data set and got the following results:<BR>\n" );
document.write( "Test statistic: Chi-Sq = 14.7638<BR>\n" );
document.write( "p-value = 0.00522<BR>\n" );
document.write( "df = (3-1)(3-1) = 4<BR>\n" );
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document.write( "Conclusion: Since p-value is less than 1%, reject Ho.<BR>\n" );
document.write( "The row and column factors are dependent: their certainty is not<BR>\n" );
document.write( "independent of the number of  credits they have earned.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============= </SPAN>\n" );
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